201246256 六、發明說明： 【發明所屬之技術領域】 本發明係關於一種鍵盤結構，特別是關於一種具有磁 性的鍵盤結構。 【先前技術】 由於電子科技產業的發達與便利，許多電子產品均使 用鍵盤來供使用者進行輸入及操作，例如筆記型電腦、手 機，或是其它的按鍵式輸入裝置等。 以筆記型電腦的鍵盤結構為例，為了提供使用者按壓 按鍵時的回饋感，經常是利用剪刀腳及彈性元件等複雜結 構，以提供使用者按壓時的回饋。但是，這種結構的按鍵 常會有鬆動而不夠緊密的感覺，而且所提供的回饋感也不 佳，更使鍵盤的整體厚度無法降低。另外，現有的鍵盤結 構複雜、零件眾多，組裝時需耗費相當多的人力與工時， 使得組裝的便利性不佳，且組裝成本也相當高。 【發明内容】 本案提供一種可提高組裝的便利性及降低組裝成 本，更可具有較佳回饋感之鍵盤結構。 本案之鍵盤結構包括一框體、一按鍵、一第一電路單 元以及一第二電路單元。框體具有至少一穿孔。按鍵設置 於穿孔，且與框體磁性連接。第一電路單元具有一第一電 性接觸點與按鍵對應設置。第二電路單元具有至一第二電 201246256 性接觸點與第一電性接觸點對應設置，其中，當按鍵受到 按壓時’㈣與㈣分離，且第―電性接觸點接二 性接觸點。 一 本案鍵盤結構之按鍵係藉由磁性力與框體連接，且當 按鍵受到按料，魏與框體分離，而第―電性接觸點二 觸第二電性接觸點。與習知相較，鍵盤結構並不使用複雜 的剪刀腳及彈性元件等結構，因此可簡化組裝的工作，藉 此可提高鍵盤結構組裝的便利性，並可降低組裂的工時^ 成本。 /外’由於框體與按鍵係藉由磁性力的作用相吸，因 此虽按鍵被按壓而與框體分離時，目魏力與距離的平方 =按壓的初期需要使用較大的力量，待按鍵脫離 伟用L ’性力會急速下降。藉由磁性力的變化，可提供 ，用者較佳的按壓回饋感，並使按鍵較為緊密 =整::r按鍵的按壓行程較短，故可降低鍵盤結 【實施方式】 以下將參照相關圖式，說明依本案較佳實施 =盤結構’其中相同的元件將以相同的參照符號加以說 請參照圖卜2A及圖2B所示，其中，圖 佳貫轭例之一種鍵盤結構丨的分解示意圖，而圖2八，、 2B分別為按鍵結構}的側視示意圖及按壓時的動作^ 201246256 圖0 如圖1所示，鍵盤結構！包括一框體u以及至少一 知:鍵12。另外，鍵盤結構1更可包括一第一電路單元13、 一第二電路單元14以及一間隔件15。 框體11具有至少一穿孔m，而按鍵12係對應於穿 孔⑴設置。於此，係以複數穿孔U1分別對應複數按鍵 12設置為例。 /如圖2A所示，按鍵12不被按壓時，按鍵12與框體 η係可藉由磁性力相吸而連結。其中，按鍵12可具有一 按鍵本體121及至少一延伸部122。於此’按鍵本體⑵ 的尺寸實質上係小於穿孔ln，並可突出於穿孔⑴（也可 不突出於穿孔1 1 1 )。 延伸部122係設置於按鍵本體121之周緣，使得按鍵 可藉由延伸部122之頂抵而連結於框體u的下緣，使 按鍵12不會往上*麟框體u。在本實施例中，係以兩 個延伸部122分別位於按鍵本體121相對兩側之周緣，且 按鍵本體121貞兩延伸部122係為一體成型為例。當缺， 在其它的實施態樣中，也可設置—個、三個或四個^伸' 122於按鍵本體121之周緣。 σ 另外，按鍵本體⑵具有一凸部123,凸部 :按鍵_框體η之一側。於此，凸部 置 按鍵本體121下側的中間仂番 „ _ 置、 第-電路Μ二 部123可接觸或不接觸 第電路早70 13,於此係以不接觸為例。 框體η及按鍵12的至少其中之—係可包含一磁性材 201246256 料。磁性材料例如可為永久磁鐵或磁性金屬，並不加以限 定。 另外’於另一實施例中，一線圈可設置於框體u面 對延伸部123的下緣，或上緣，再對應設置配合的磁性元 件’藉由線圈通電後產生的磁場與磁性元件搭配可使框體 11與按鍵12之間產生相吸或相斥的磁性力，因此，可藉 此調整按壓時的回饋感覺。具體而言，例如可提高框體i i 及按鍵12之間相吸的磁性力，使按壓按鍵12時需要較大 的力量’藉此提高回饋感。 另外’凊同時參照圖1及圖2B所示，第一電路單元 13具有至少一第一電性接觸點131與按鍵12對應設置， 第二電路單元14具有至少一第二電性接觸點141與第一 電性接觸點131對應設置。於此，係以複數按鍵12分別 對應複數第-電性接_ m，且分別對應複數第二電性 接觸點141為例。 其中，一實施例中，第一電路單元13具有一第一基 板131’第一電性接觸點]31係設置於第一基板之上。 第一電路單疋14具有第二基板142 ’第二電性接觸點⑷ 係設置於第二基板142之上。 §月參照圖2Α，一間隔件15設置於第一電路單元η 及第二電路單元14之間。間隔件15.可隔開第—電路單元 13及第二電路單a 14,並使兩者絕緣 ^及第二電路單元14上之電性接觸點不會接觸 ^、中，間隔件15具有至少一開口 151，開口⑸係與凸部 201246256 123對應設置。當然，開口 151也與第一電性接觸點m 及第二電性接觸點141對應設置。 如圖2A所示，當按鍵12不被按壓時，凸部123並不 擠壓第-電路單元131 ’且第-電性接觸點131與第二電 性接觸點141係不接觸。如圖2B所示，當按鍵12被按壓 .時’凸部123係擠壓第一電路單元13,並使第一電性接觸 點131往下通過開口 ι51，使第一電性接觸點I]〗與第二 電路單元14之第二電性接觸點141接觸而兩接觸點電性 導通，藉此使鍵盤結構1產生對應的控制動作。 再參照圖2A所示，當按鍵12的按壓力量消失時，藉 由按鍵12與框體U之間的磁性力作用，使按鍵12可^ 而離開第—電路單元13，並與框體u連結。另外，也 藉由第t路單元13之第一基板132本身的彈性恢復力 可使第-電性接觸點131往上而脫離第二電性接觸點⑷。 另外，請參照圖3所示，其為本案另一實施態樣之鍵 盤結構1 a的示意圖。 鍵盤結構la與鍵盤結構！主要的不同在於，鍵盤結構 la更可包括-線圈c設置於框體u面對延伸部⑵的下 緣:而按鍵12a之延伸# 123㈣應位置上更可具有一磁 性元件124 (例如永久磁鐵）。因此，可於線圈〇上通電， 使其產生與磁性元件124相同或相反的磁性，藉此分別提 供磁性相吸或相斥的力量，以調整按㈣的回饋感。 承上’本案鍵盤結構】使用的零件較少，且並不使用 白习知的剪刀腳及彈性元件等複雜結構，因此可簡化組裝的 201246256 工作，藉此可提高鍵盤結構1組裝的便利性，並可降低組 裝的工時及成本。 另外，由於框體11與按鍵12係藉由磁性力的作用， 因此當按鍵12被按壓而與框體11分離時，因磁性力和距 離的平方成反比，故按壓的初期需要較大的力量，待按鍵 12脫離框體11後，磁性力會急速下降。藉由磁性力的變 化，可提供使用者較佳的按壓回饋感。此外，也可藉此使 按鍵的按壓行程較短，故可降低鍵盤結構1的整體厚度。 以上所述僅為舉例性，而非為限制性者。任何未脫離 本發明之精神與範疇，而對其進行之等效修改或變更，均 應包含於後附之申請專利範圍中。 【圖式簡單說明】 圖1為本案較佳實施例之一種鍵盤結構的分解示意 圖； 圖2A及圖2B分別為按鍵結構的側視示意圖及按壓時 的動作示意圖；以及 圖3為本案另一實施態樣之鍵盤結構的示意圖。 【主要元件符號說明】 1、la :鍵盤結構 II :框體 III :穿孔 12、12a :按鍵 201246256 121 :按鍵本體 122 :延伸部 123 :凸部 124 :磁性元件 13 :第一電路單元 131 :第一電性接觸點 132 :第一基板 14 :第二電路單元 141 :第二電性接觸點 142 :第二基板 15 :間隔件 151 :開口 C :線圈201246256 VI. Description of the Invention: [Technical Field] The present invention relates to a keyboard structure, and more particularly to a keyboard structure having magnetic properties. [Prior Art] Due to the development and convenience of the electronic technology industry, many electronic products use a keyboard for input and operation by a user, such as a notebook computer, a mobile phone, or other push-button input devices. Taking the keyboard structure of the notebook computer as an example, in order to provide a feedback feeling when the user presses the button, a complicated structure such as a scissor foot and an elastic member is often used to provide feedback when the user presses. However, the buttons of this structure are often loose and not tight enough, and the feedback provided is not good, and the overall thickness of the keyboard cannot be reduced. In addition, the existing keyboard structure is complicated and the parts are numerous, and a considerable amount of manpower and man-hours are required for assembly, which makes the assembly convenient and the assembly cost is also high. SUMMARY OF THE INVENTION The present invention provides a keyboard structure that can improve assembly convenience, reduce assembly cost, and has better feedback. The keyboard structure of the present invention comprises a frame, a button, a first circuit unit and a second circuit unit. The frame has at least one perforation. The button is set to the perforation and is magnetically connected to the frame. The first circuit unit has a first electrical contact point corresponding to the button. The second circuit unit has a second electrical connection to the first electrical contact point, wherein the (4) and (4) are separated when the button is pressed, and the first electrical contact is connected to the second contact. The key of the keyboard structure of the present invention is connected to the frame by magnetic force, and when the button is pressed, the Wei is separated from the frame, and the first electrical contact point touches the second electrical contact point. Compared with the conventional structure, the keyboard structure does not use complicated scissor legs and elastic members, so that the assembly work can be simplified, thereby improving the convenience of assembling the keyboard structure and reducing the labor cost of the splitting. / Outside 'Because the frame and the button are attracted by the action of the magnetic force, even if the button is pressed and separated from the frame, the square of the force and the distance = the initial force of the pressing needs to use a large force, to be pressed Deviation from the use of L 'sexual power will drop rapidly. By the change of the magnetic force, the user can provide a better feedback feeling and make the button relatively tight. The whole::r button has a shorter pressing stroke, so the keyboard knot can be lowered. [Embodiment] Reference will be made to the related drawings. In the preferred embodiment of the present invention, the same components will be referred to by the same reference numerals. Please refer to FIG. 2A and FIG. 2B, wherein an exploded view of a keyboard structure of the yoke example is shown. Figure 2, 8B, 2B are the side view of the button structure} and the action when pressing ^ 201246256 Figure 0 As shown in Figure 1, the keyboard structure! A frame u and at least one of the keys 12 are included. In addition, the keyboard structure 1 further includes a first circuit unit 13, a second circuit unit 14, and a spacer 15. The frame 11 has at least one perforation m, and the button 12 is provided corresponding to the perforation (1). Here, the plural perforation U1 is set as an example corresponding to the plurality of keys 12, respectively. As shown in Fig. 2A, when the button 12 is not pressed, the button 12 and the frame η can be coupled by magnetic force. The button 12 can have a button body 121 and at least one extension portion 122. The size of the button body (2) is substantially smaller than the perforations ln and may protrude from the perforations (1) (may not protrude beyond the perforations 1 1 1 ). The extension portion 122 is disposed on the periphery of the button body 121 so that the button can be coupled to the lower edge of the frame u by the abutment of the extension portion 122, so that the button 12 does not go up to the frame body u. In this embodiment, the two extending portions 122 are respectively located on the opposite sides of the opposite sides of the button body 121, and the button body 121 and the two extending portions 122 are integrally formed as an example. In other embodiments, one, three, or four extensions 122 may be disposed on the periphery of the button body 121. σ In addition, the button body (2) has a convex portion 123, and the convex portion is one side of the button_frame η. Herein, the middle portion of the convex portion of the button body 121 may be in contact with or not in contact with the first circuit 7013. The frame is not exemplified. At least one of the keys 12 may comprise a magnetic material 201246256. The magnetic material may be, for example, a permanent magnet or a magnetic metal, and is not limited. In another embodiment, a coil may be disposed on the frame u surface. For the lower edge of the extension portion 123, or the upper edge, the magnetic element generated by the matching magnetic element is coupled with the magnetic element by the magnetic field generated by the coil, so that the magnetic attraction between the frame 11 and the button 12 is caused to be attracted or repelled. Therefore, the feedback feeling at the time of pressing can be adjusted. Specifically, for example, the magnetic force attracted between the frame ii and the button 12 can be increased, so that a large force is required when the button 12 is pressed, thereby improving the feedback. In addition, as shown in FIG. 1 and FIG. 2B, the first circuit unit 13 has at least one first electrical contact point 131 corresponding to the button 12, and the second circuit unit 14 has at least one second electrical contact point. 141 and the first electrical connection The contact 131 is correspondingly disposed. Here, the plurality of buttons 12 respectively correspond to the plurality of first electrical contacts _ m, and respectively correspond to the plurality of second electrical contact points 141. In one embodiment, the first circuit unit 13 has a first substrate 131' first electrical contact point 31 is disposed on the first substrate. The first circuit unit 14 has a second substrate 142 'the second electrical contact point (4) is disposed on the second substrate 142. 月月 Referring to FIG. 2A, a spacer 15 is disposed between the first circuit unit η and the second circuit unit 14. The spacer 15. The first circuit unit 13 and the second circuit unit a 14 may be separated. And insulating the two and the electrical contact points on the second circuit unit 14 are not in contact with the middle, the spacer 15 has at least one opening 151, and the opening (5) is correspondingly arranged with the convex portion 201246256 123. Of course, the opening 151 is also Corresponding to the first electrical contact point m and the second electrical contact point 141. As shown in FIG. 2A, when the button 12 is not pressed, the convex portion 123 does not press the first-circuit unit 131' and the first-electrode The contact point 131 is not in contact with the second electrical contact point 141. As shown in FIG. 2B, when the button is pressed When the 12 is pressed, the convex portion 123 presses the first circuit unit 13 and passes the first electrical contact point 131 downward through the opening ι 51 to make the first electrical contact point I and the second circuit unit 14 The second electrical contact point 141 is in contact and the two contact points are electrically connected, thereby causing the keyboard structure 1 to generate a corresponding control action. Referring to FIG. 2A again, when the pressing force of the button 12 disappears, the button 12 and the frame are eliminated. The magnetic force between the bodies U acts to cause the button 12 to leave the first circuit unit 13 and be coupled to the frame u. In addition, the elastic restoring force of the first substrate 132 of the t-th unit 13 can also be utilized. The first electrical contact 131 is turned up and out of the second electrical contact (4). In addition, please refer to FIG. 3, which is a schematic diagram of a keyboard structure 1a according to another embodiment of the present invention. Keyboard structure la and keyboard structure! The main difference is that the keyboard structure la may further include that the coil c is disposed on the lower edge of the frame u facing the extension (2): and the extension of the button 12a (123) should have a magnetic element 124 (for example, a permanent magnet). . Therefore, the coil turns can be energized to produce the same or opposite magnetic properties as the magnetic member 124, thereby providing magnetic attraction or repulsive force, respectively, to adjust the feedback feeling according to (4). The 'keyboard structure of the case' is less used, and does not use complicated structures such as scissors feet and elastic components of the white, so the assembly of 201246256 can be simplified, thereby improving the convenience of assembly of the keyboard structure 1. Reduce the labor and cost of assembly. Further, since the frame 11 and the button 12 are acted by magnetic force, when the button 12 is pressed and separated from the frame 11, since the magnetic force is inversely proportional to the square of the distance, the initial force of the pressing requires a large force. When the button 12 is released from the frame 11, the magnetic force will drop rapidly. By the change of the magnetic force, the user can provide a better feeling of pressing feedback. Further, the pressing stroke of the button can be made shorter, so that the overall thickness of the keyboard structure 1 can be reduced. The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the present invention are intended to be included in the scope of the appended claims. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a keyboard structure according to a preferred embodiment of the present invention; FIG. 2A and FIG. 2B are respectively a side view of a button structure and an operation diagram when pressed; and FIG. 3 is another embodiment of the present invention. Schematic diagram of the keyboard structure of the aspect. [Main component symbol description] 1. la: keyboard structure II: frame III: perforation 12, 12a: button 201246256 121: button body 122: extension portion 123: convex portion 124: magnetic element 13: first circuit unit 131: An electrical contact point 132: first substrate 14: second circuit unit 141: second electrical contact point 142: second substrate 15: spacer 151: opening C: coil